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INSTALLER: Leave this manual with party responsible for use and operation.
OWNER: Retain this manual for future reference.
Contact your dealer with questions on installation, operation, or service.
NOTICE:
DO NOT discard this manual!
Model(s):
WOODBURNING FIREPLACE
Installation and service of this appliance should be performed by
Owner's Manual
Operation and Care
Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020
WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury, or death.
• DO NOT store or use gasoline or other flam-
mable vapors and liquids in the vicinity of this
or any other appliance.
• DO NOT overfire. Overfiring will void your
warranty.
• Comply with all minimum clearances to com-
bustibles as specified. Failure to comply may
cause house fire.
WARNING
HOT SURFACES!
Glass and other surfaces are hot during
operation AND cool down.
Hot glass will cause burns.
• DO NOT touch glass until it is cooled
• NEVER allow children to touch glass
• Keep children away
• CAREFULLY SUPERVISE children in same room as
fireplace.
• Alert children and adults to hazards of high temperatures.
High temperatures may ignite clothing or other flammable
materials.
• Keep clothing, furniture, draperies and other flammable
materials away.
WARNING
Fire Risk.
For use with solid wood fuel only.
Other fuels may overfire and generate
poisonous gases (i.e. carbon monoxide).
1

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Summary of Contents for Heat&Glo HST-42D

  • Page 1 • Keep clothing, furniture, draperies and other flammable materials away. WARNING Fire Risk. For use with solid wood fuel only. Other fuels may overfire and generate poisonous gases (i.e. carbon monoxide). Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 2: Table Of Contents

    1. Hardwood vs. Softwood 2. Moisture content 3. Seasoning 4. Storing Wood 5. Burning Process 6. Creosote Formation 7. Processed Solid Fuel Firelogs D. First Fire E. Lighting Instructions Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 3: Welcome

    Grate HEARTH & HOME TECHNOLOGIES IF INSTALLATION OR OPERATING INSTRUCTIONS ARE MISSING CONTACT: HEARTH & HOME TECHNOLOGIES, 7571 215th Street West, Lakeville, MN 55044. P.N. 4021-954C Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 4: Limited Lifetime Warranty

    (engine, inner cover,access cover and fireback) None 1 Year All replacement parts beyond warranty period See conditions, exclusions and limitations on the next page Page 1 of 2 4021-645K 1/20 Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 5 OTHER THAN THE WARRANTY SPECIFICED HEREIN. THE DURATION OF ANY IMPLIED WARRANTY IS LIMITED TO DURATION OF THE EXPRESSED WARRANTY SPECIFIED ABOVE. 4021-645K 1/20 Page 2 of 2 Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 6: Product Specific And General Information

    Warning! Risk of Fire! fireplace with the chimney removed. For use with solid wood fuel only. Other fuels may overfire and generate poisonous gases (i.e. carbon monoxide). Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 7: Important Safety And Operating Information

    State of California to cause birth defects Sides of Fireplace (from the FP or other reproductive harm. For more infor- opening) mation go to: www.P65Warnings.ca.gov. Figure 3.1 Clear Space Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 8: Grate

    If doors are left partly open, gas and flame may be drawn out of the fireplace opening. Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 9: General Operating Parts

    Damper Handle Air Kit close Handle open close (out) (in) Figure 3.2 General Operating Parts Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 10: Flue Damper

    CAUTION! Outside air control handle may be warm. Adjust before lighting fire. BOTH SIDES CLOSED PARTLY CLOSED/OPENED CORRECT INCORRECT Figure 3.3 Operating Positions of Bi-fold Doors Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 11: Fuel

    Soft woods Hard woods • Douglas Fir • Oak • Pine • Maple • Spruce • Apple • Cedar • Birch • Poplar • Aspen • Alder Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 12: Seasoning

    Doing so • refractory is in place may trap moisture from the ground and impede air • all labels have been removed circulation. Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 13: Lighting Instructions

    • use gasoline, lantern fuel, kerosene, charcoal lighter fluid or similar liquids to start or “freshen up” a fire in this fireplace. Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 14: Maintenance And Service

    In the event of a chimney fire, Hearth & Home Tech- nologies recommends replacement of the chimney and inspection of the adjacent structure to the provisions of NFPA Level III inspection criteria. Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 15: Creosote (Chimney) Cleaning

    TCT375 TR344/TR342 DTO/DTS Series Terra Cotta Square Square Round Termination Cap Termination Cap Termination Caps Termination Cap Termination Cap Figure 4.1 Chimney & Termination Cap Cleaning Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 16: Grate

    F. Refractory Frequency: As necessary Homeowner • Inspect condition of brick. Replace if crumbly or otherwise deteriorated, or if cracks exceed 1/4 in. (6 mm). Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 17: Troubleshooting

    Add glass doors to slow down air flow. Overdrafting Check for correct vent height; too much vertical height creates overdrafting. Check location of vent termination (refer to chimney assembly section). Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 18: Faqs

    Contact your dealer for additional infor- mation regarding operation and trouble- shooting. Visit www.heatnglo.com to find a dealer. Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 19 Air register from furnace near fireplace? Doors opening and closing? Outside air Window closed Combustion closed? for start-up? air control Figure 5.1 Factory-built Fireplaces: Troubleshooting Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 20: Reference Materials

    Ashlip 20401 Qty 2 req Hearth Refractory 13321B Damper Control 20549 Grate GR12 Drywall Flange Qty 2 req 20429 Additional service parts on following page. 9/18 Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 21 Qty 2 req Refractory Standoff 13327D Qty 2 req Smoke De ector 20603B Qty 2 req Strip Protector SRV18320 Qty 4 req Installation Manual 4012-066 Owners Manual 4012-065 Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 22: Accessories

    B. Accessories Doors DM1036 Bi-fold glass doors with black trim DM1036S Bi-fold glass doors with stainless steel trim Gas Log Sets Gas Log Lighters Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 23 This page intentionally left blank. Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...
  • Page 24: Contact Information

    7216645, D320652, D445174, D462436; (Canada) 1297749, 2195264, 2225408, 2313972; (Australia) 780250, 780403, 1418504 or other U.S. and foreign patents pending. Printed in U.S.A. - Copyright 2012 Heat & Glo • HST-42D Owner Manual • 4012-065 • Rev I • 1/2020...

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